/
controller.go
83 lines (76 loc) · 2.97 KB
/
controller.go
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package snapshot
import (
"time"
api "github.com/kubedb/apimachinery/apis/kubedb/v1alpha1"
cs "github.com/kubedb/apimachinery/client/clientset/versioned"
kubedb_informers "github.com/kubedb/apimachinery/client/informers/externalversions/kubedb/v1alpha1"
api_listers "github.com/kubedb/apimachinery/client/listers/kubedb/v1alpha1"
amc "github.com/kubedb/apimachinery/pkg/controller"
jobc "github.com/kubedb/apimachinery/pkg/controller/job"
crd_api "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/client-go/tools/cache"
"k8s.io/client-go/tools/record"
crdutils "kmodules.xyz/client-go/apiextensions/v1beta1"
"kmodules.xyz/client-go/tools/queue"
)
type Controller struct {
*amc.Controller
amc.Config
// Snapshotter interface
snapshotter amc.Snapshotter
// tweakListOptions for watcher
tweakListOptions func(*metav1.ListOptions)
// Event Recorder
eventRecorder record.EventRecorder
// Snapshot
snLister api_listers.SnapshotLister
}
// NewController creates a new Controller
func NewController(
controller *amc.Controller,
snapshotter amc.Snapshotter,
config amc.Config,
tweakListOptions func(*metav1.ListOptions),
eventRecorder record.EventRecorder,
) *Controller {
// return new DormantDatabase Controller
return &Controller{
Controller: controller,
snapshotter: snapshotter,
Config: config,
tweakListOptions: tweakListOptions,
eventRecorder: eventRecorder,
}
}
func (c *Controller) EnsureCustomResourceDefinitions() error {
crd := []*crd_api.CustomResourceDefinition{
api.Snapshot{}.CustomResourceDefinition(),
}
return crdutils.RegisterCRDs(c.ApiExtKubeClient, crd)
}
// InitInformer ensures snapshot watcher and returns queue.Worker.
// So, it is possible to start queue.run from other package/repositories
// Return type: snapshotInformer, JobInformer
func (c *Controller) InitInformer() (cache.SharedIndexInformer, cache.SharedIndexInformer) {
c.SnapInformer = c.KubedbInformerFactory.InformerFor(&api.Snapshot{}, func(client cs.Interface, resyncPeriod time.Duration) cache.SharedIndexInformer {
return kubedb_informers.NewFilteredSnapshotInformer(
client,
c.WatchNamespace,
resyncPeriod,
cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc},
c.tweakListOptions,
)
})
c.JobInformer = jobc.NewController(c.Controller, c.snapshotter, c.Config, c.tweakListOptions, c.eventRecorder).InitInformer()
return c.SnapInformer, c.JobInformer
}
// AddEventHandlerFunc adds EventHandler func. Before calling this,
// controller.Informer needs to be initialized
// Return type: Snapshot queue as 1st parameter and Job.Queue as 2nd.
func (c *Controller) AddEventHandlerFunc(selector labels.Selector) (*queue.Worker, *queue.Worker) {
c.addEventHandler(selector)
c.JobQueue = jobc.NewController(c.Controller, c.snapshotter, c.Config, c.tweakListOptions, c.eventRecorder).AddEventHandlerFunc(selector)
return c.SnapQueue, c.JobQueue
}